提交 0ba137e2 编写于 作者: M Maciej W. Rozycki 提交者: Linus Torvalds

dz: don't panic() when request_irq() fails

Well, panic() is a little bit undue if request_irq() fails; there is probably
no need to justify it any further.  Handle the case gracefully, by
unregistering the driver.
Signed-off-by: NMaciej W. Rozycki <macro@linux-mips.org>
Cc: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
上级 dbab8128
......@@ -794,18 +794,28 @@ static int __init dz_init(void)
dz_reset(&dz_ports[0]);
#endif
if (request_irq(dz_ports[0].port.irq, dz_interrupt,
IRQF_DISABLED, "DZ", &dz_ports[0]))
panic("Unable to register DZ interrupt");
ret = uart_register_driver(&dz_reg);
if (ret != 0)
return ret;
goto out;
ret = request_irq(dz_ports[0].port.irq, dz_interrupt, IRQF_DISABLED,
"DZ", &dz_ports[0]);
if (ret != 0) {
printk(KERN_ERR "dz: Cannot get IRQ %d!\n",
dz_ports[0].port.irq);
goto out_unregister;
}
for (i = 0; i < DZ_NB_PORT; i++)
uart_add_one_port(&dz_reg, &dz_ports[i].port);
return ret;
out_unregister:
uart_unregister_driver(&dz_reg);
out:
return ret;
}
module_init(dz_init);
......
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